Sorry Monroe...I was so consumed by my vision 3 years ago that I did not know what you asked.

The heating for Solar Eagle is not a problem...it brakes with 120 m2 elevator...90 degs the direction where the craft is goin at 220 km alt already....and starting to decelerate rapidly....turns the bottom sideways ( like re entry pod and decelerates in the really thin air as it is 40 times lighter in wing loading as a space shuttle was )...as the gas gets thicker all the time...at 120-110 km it is fully flying at re entry at M 14-12 speed...at 80 km it is below M7 at speed etc.

I am starting the 1/40 scale r/c model soon.

We counted that the props would provide thrust in space if the gear reduction was altered to turn the props at 50 000 - 100 000 rpm. Thrust generated at LEO is 10-100 times more than in a ION-thruster.

Output doubled. Craft can carry boosters to the orbit and thus build a rocket harness to embark the solar system at considerable speed...and or send a probe at tramendous speed toward the Proxima Centaur's recently discovered new exo-planet. The plane seems to be able to fly 750 kmh at 20 km altitude with electrics at 200 ton mass.

The power requirement would be more like 400% or 1600% which is the problem.

The power draw will increase twice as fast as you increase the solarcells.

You don't comprehend what I am trying to prove here.Did you know there were 2000 electric cabs in New York in 1889 and they had 1800 watt engines ? That isn't today even enough to heat the wind screen in a Ford.